Q. 105.0( 2 Votes )
Which of the following is equal to 1?
A. 20 + 30 + 40
B. 20 × 30 × 40
C. (30 – 20) × 40
D. (30 – 20) × (30 + 20)
Answer :
We have the law of Indices as follows:
a0 = 1
Where a = any integer
Let us try option A.
20 + 30 + 40 = 1 + 1 + 1
= 3
20 × 30 × 40 = 1 × 1 × 1
= 1
(30 – 20) × 40 = (1-1) × 1
= 0 × 1
= 0
(30 – 20) × (30 + 20) = (1-1) × (1 + 1)
= 0 × 1
= 0
So the correct answer is B.
Rate this question :
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